Stop-motion for knitting-machines.



No. 787,115. PATENTBD APR. 11, 1905. G. W. RUTH.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED APB. 16, 1904.

4 SHEETS-811891I 2.

| IHIII 4 SHEETS-SHEET 3.

PATBNTED APR. l1, 1905.

G. W. RUTH.

STOP MOTION FOR KNITTING MACHINES.

APPLIOATIoN FILED APR. 1e, 1904.

PATENTED APR. 11, 1905.

G. W. RUTH.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED APR.16, 1904.

4 SHBETS-SHEET 4.

UNTTED STATES Patented Api-i1 11, 1905.

PATENT @Finca tlCOhCll hU'lll, OF YORK, PENNSYLVANIA, ASSIHNOR 'lO RUTH AU'IOMA'IIC liNlT'llNtl MACHINE COMPANY, A CORPQHLLYFION OF DELAUVA h` F.

STOP-NIOTlON FOR KNlTTlNG-NIACHINES.

SPECIFICATION forming part of Letters Patent No. 787,115, dated April 11, 1905.

Application filed April 16,

Zen of the United States. residing' at York, in the county of York and State of Pennsylvania, have invented a new and useful Improvement in Stop- Motions for Knitting'-Machines1 of whieh the following' isa specilication.

A\ly invention relates to kouting-machines.

lt consists of devices for automatically throwing olf the power and for applying' a brake when the thread breaks or is obstructed.

lt further consists of means for releasing' the yarn. so as to g'ive increased slack when the machine is stopped.

lt further consists of devices for facilitating' the threading' of the machine.

It further consists of other novel features of const ruction. all as will be hereinafter fully set forth.

Figures l and L) represent,respectively, front and side elevations of my device, portions being omitted in each ligure Yfor the sake of clear illustration. Fig. represents a section thrtulg'h the line 1/ u. VFig'. L). parts being' removed. Fig'. l is a section through the line /i Fig'. l. Fig-s. 5 and (j are fragmentary elevations of the comb portion of the device shown in Fig. l. Fig. T is a vertical section through the line e e, Fig'. l. Figs. 8 and 9 are fragmentary vertical sections of rod-engaging' portions shown in Figs. land Fig'. 1t) is an elevation of a portion shown at the uppei' right corner of Fig'. L). Fig'. ll is a top plan view o f the same portion and its connected parts. Figs. l2 and l, are fragmentary seetions of the portion shown in the upper left corner of Fig'. 2 in different positions. Fig.

l-l. represents an elevation of the belt-shifting' y portion of the device. Fig'. l5 is a fragmentary vertical section through the line Fig'. Zi. Figs. T to l?, are on an enlarged scale.

Similar numerals of reference indicate corresponding' parts in the ligures.

l'el'erring to the drawings, l designates a l guide .3, through which passes the lower ends From a braeket 3 at the rear i 1904. Serial No. 203.465.

`lof drop-rods (i and T. Supported on the comb l0, cot'perating' with which is the hinged comb ll, the stem ol` which is bent to form a horizontal pintle l2, its` extreme end being' bent upward to forma lug' 123. '.l`he pintle l2 is pivoted on the plate S in a recess in a block l1, secured on the upper side of the plate. Pivoted at l5 on the plate 8 are two spring'- actuated levers lo. each provided with ahead 1T, adapted to engagement with the lug' l2.) ol. the comb 11. Pivoted at 18 in a slot lf) at each end of the plate o is a dog' 20, the nose 2l of which is adapted to eng'age with the l swing-actuated lever lo, as shown in Fig'. '-L of the drawings. The tip Q2 of the dog' 2O lies in the pat-h of the lug' i3 when the comb il drops forward, as is clearly .shown in Fig'. 5 of the d ra.vings. The nose 23 of each lever 113 normally presses against a spring-actuated detent 2l. which engages with a shoulder '.25 of the drop-rod T. Mounted on the rod 1 above the plate S is a guide-bar 2.6, having' eyes 2T and rearwardly-extending' slots adjacent its ends. Secured beneath the ends of the plate 8 are guide-plates 28, having' longitudinal slots 29 leading' to eyes 30 and having' forwardly-projecting' pins ol beneath and transverse of the slots 29. vertically above the eyes Gare the eyes 32 in the plate S, from which extend slots il?) (see Fig'. l) forwardly to the edge of the plate. Supported at the upper end of the rod l is a head 34, having' a forwardly and upwardly projecting' arm 35, 4 carrying'a block 3o at its forward end. Pivf oted at 3T at each side of the head 3l is a plate 3o. A pull-spring' 3.) connects the head El and plate 3S, as clearly shown in Fie'. 2 of the drawings. Pivoted to the forward end of the plate 3S isa rod Jul, which extends downward through a guide il on the plate S and strikes l against the head of a wedge 12. Pivotally mounted at 13 on the forwardly-proiecting arm .JA of the plate e are levers fk5, the rear ends lo of which are normally forced together l l i of the plate 8 is mounted the usual stationary by a spring 47 adjacent their forward ends. (See Fig. 4.) The rear ends 46 of the levers 45 are adapted to engage with a shoulder 48 on the rod 6. The wedge 42 passes between and normally acts to separate the ends 46 of the levers 45. The wedge may be normally raised by a spring 49. (Shown in Figs. 7 and 8 of the drawings.) Projecting forwardly from the forward end of each plate 38l is a rod 50, the free end of which is held to vertical movement against the side of the block 36 by a guide-wire 51. Pivoted at 52 to the front of the block 36 is a hook 53, having a transverse slot 54, in which the rod moves. Pivoted to the side of the army 35 is a lever 57, the laterally-bent rear end 58 of which engages with the shoulder 59 of a portion 60, secured on the plate 38. As clearly shown in Fig. 10, the portion 60 is formed with a slot 61 in its Lipper surface, through which passes a screw 62, by which it is secured to the plate 38.- Adjusting-screws 63 64 (shown in Fig. 11) determine the longitudinal movement of the portion 60 under the head of the screw 62. As shown in Figs. 12 and 13 of the drawings, the forward end 56 of the lever 57 engages with a short lever 65, pivoted at 66 in the upper part of the block 36. The nose 67 of the lever 66 engages with the shoulder 55 of the hook 53. A plate 68 at the rear of the lever is pressed against by a spring 69 in a bore 70 of the block 36, the tension of the spring being adjustable by means of a setscrew'71, passing upward through the block.

On the lower ends of the rods 6 and 7, respectively, are collars 72 73, between which and the guide 5 are supported thrust-springs 74 75. Supported beneath the bracket 3 is a lever 76, normally upheld by a spring 77 and having a lug 78, adapted to engage with a shoulder 79 in a laterally-movable rod 80. Mounted on the rod 8O is a collar 81, against which bears a thrust-spring 82, operative to force the rod 8O against the end of a lever 83, which bears a friction-shoe 84, adapted to engage with the web of a pulley 85, secured on the main shaft 86 of the machine. A collar 87 also on the rod 8O bears against a lever 88,

secured to a cam-plate 89, pivoted at 9001i the base-plate 1. The lower surface 91 of the vcam-plate 89 is beveled and engages with the bracket 3, has a toe 102 engaging beneath the collars 72 73on the shafts 6 and 7.

The operation is as follows: The yarns from the cop (shown in Figs. 1 and 2 of the drawings) are threaded up at the opposite sides of the machine. The yarn lirst passes through the eye 30 in the plate 28, thence through the eye 32 in the plate 8, it being noted that the guide-slots leading to these eyes extend the one forwardly and the other lengthwise of the machine, so that the yarn cannot be easily dislodged therefrom. The comb 11 is then raised to its vertical position and the yarn passed between its teeth and those of the comb 10, thence through the eye 27 in the guide-bar 26 and over the hook 53 at the forward end of the arm 35. From this point it passes downwardly toward the camcylinder 2. Should a break occur in the yarn, it is evident that the comb 11, b eing no longer upheld by the yarn, will drop forward, as shown in Fig. 5 of the drawings, whereby the lug 13 will strike against the tip 22 of the dog, thereby releasing the lever 16 and permitting its nose 23 to engage with the detent 24, which is thereby disengaged from the shoulder 25 of the drop-rod 7. This permits the lower end of the rod 7 to strike against the free end of the lever 76, whereby the spring-actuated rod is released and the brake-shoe 84 forced against the pulley 85. At the same time the fork 98 is moved to shift the belt 99 onto the loose pulley 10() by means of the spring-actuated shaft 96 and the releasing device connected therewith. As both these devices for shifting a belt and for applying the brake form the subject of my copending application, Serial No. 163,090, it is unnecessary to describe the same in this connection.

1f a knot or other imperfection should be found in the yarn or Ain the case of a tight cop, an eXtra strain will be brought on the yarn, which will suffice to depress the hook 53, as shown in dotted lines, Fig. 1. This casts 'off all the slack of the yarn between the eye 27 and the needles. At the same time the movement of the hook 53 releases the nose 67 of the short lever 65, which in turn permits the movement of the lever 57, thereby disengaging its rear end 58 from the piece 60 on the plate 38. The plate is immediately rotated by the action of the spring 39, thereby forcing down the rod 40. The foot of this rod engages with the head of the wedge 42, depressing the same. This acts to separate the inner ends 46 of the levers 45, releasing their engagement from the shoulder 48 of the rod 6. The downward movement of this rod depresses the end of the lever 76, with the effect of arresting the power and the motion of the machine. as before. It will be seen that the amount of increased strain on the yarn necessary to operate the motion-arresting means may be varied by means of the screw 71, acting through the spring 69, by which the lever 65 is normally maintained in engagement with the hook 53. 1t will also be seen IOO IIO

that the sensitiveness of this part of the device may be varied by the adjustment of the portion on the head 34.

ln case of a stoppage of the machine either through a knot in or a discontinuation of the yarn and after the yarn has been properly retln'eaded, as above described, it is evident that by means oif the hand-lever 101 the operator may raise both drop-rods 6 and T at the same operation. 'hen the rod 6 is raised so as to bring its shoulder JIS above the plane of the ends e of the levers 45, as shown in Fig. t) of the drawings, it is evident that these will rengage the rod beneath the shoulder, the wedge le.) being raised by the spring 49. The upper end of the rod 6, striking against the collars L03, secured on each of the upper rods 4d), acts to raise the plate 3S to the position shown in Fig. Q of the drawings, wherebythe end 58 of the lever 57 is reengaged with the shoulder 59 of the piece 60. At the same time the rod 50, playing' in the slot 54 of the hook 53, raises the hook to the position shown in full lines, Fig. l, and permits the end of the lever 66 to engage with its shoulder 54.

The upward movement of the rod T, caused by the lever 101, permits the detent Q4 to engage beneath the shoulder 25 on the rod, so that the entire device is reset ready for a repetition of its motion-arresting action in case of a second accident.

lt will be noted that my device provides separate and distinct means for cutting' off the power and applying' the brake in the event of increased tension on the yarn or in the event of a break therein, that these means are simultaneously returnable to their operative positions by means of an integral device, and that the amount of tension which the device will resist before casting otf the slack of the yarn and releasing the motion-arresting means is adjustable within wide limits.

lt is evident that various changes may be made by those skilled in the art which will come within the scope of my invention, and l do not, therefore, desire to be limited in every instance to the exact construction herein shown and described.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is

l. A stop-'motion com prising motion-arresting means, laterally-movable and single means operative to release said motion arresting means, and separate vertieally-moving parts adapted to contact with said single means, one in the event of an increased tension on the yarn, the other in the event of a break in the yarn.

2. A stop-motion comprising motion-arresting means, laterally-movable and laterallymoving means operative to release said motion-arresting means, separate vertically-moving' parts adapted to contact with said moving means, one in the event of an increased tension on the yarn, the other in the event of a break in the yarn, and integ'ral manual means for resetting both said separate moving parts in their operative positions.

3. A stop-motion comprising motion-arresting' means, a plurality of drop-rods each of which is adapted to release said motion-arresting means, means normally sustaining one of said drop-rods and adapted to disengagement therefrom in the event of an increased tension on the yarn, and means normally sustaining the other of said rods and adapted to disengagement therefrom in the event of a break in the yarn, said droprods being situated between the sustaining means and said motionarresting means.

LL. A stop-motion com prising motion-arresting means, a plurality of drop-rods each of which is adapted to release said motion-arresting means, means normally sustaining' one of said drop-rods and adapted to disengagement therefrom in the event of an increase-d tension on the yarn, means normally sustaining the other of said rods and adapted to disengagement therefrom in the event of a break in the yarn,and yarn-engaging means acting' simultaneously with the movement of said first-named sustaining' means to slacken the yarn, said drop-rods being situated between the sustaining means and said motion-arresting means.

A stop-motion comprising motion-arresting means, a plurality of drop-rods each of which is adapted to release said motion-arresting means, means normally sustaining one of said drop-rods and adapted to disengagement therefrom in the event of an increased tension on the yarn, means normally sustaining the other of said rods and adapted to disengagement therefrom in the event of a break in the yarn, said drop-rods being situated between the sustaining means and said motionarresting means and a manual lever adapted to engage with said rods and thereby reset said sustaining means in their normal positions.

6. In a stop motion, motion arresting means, a drop-rod adapted to release said motion-arresting means, means for holding' said drop-rod in elevated position, a yarn-supporting hook adapted to cast oti the yarn in the event of increased tension thereon, mechanism intermediate said hook and said d rop-rod for actuating the latter, a second drop-rod adapted to release said motion -arresting means, means 'for holding said second droprod in elevated position and means for releasing said second drop-rod in the event of a break in the yarn, said drop-rods beingl situated between the sustaining means and said motion-arresting means.

T. In a stop-motion, an arresting means, releasingl means including a pivotally-mounted varlrsupporting hook adapted to cast off the yarn in the event of increased tension thereon,

IOO

yielding means for holding said hook in elevated position,a spring-actuating device pivotally mounted, a lever operatively connecting said hook and said device and means operated by said device for actuating said arresting means.

8. In a stop-motion, an arresting means, releasing means including' a pivotally-mounted yarn supporting hook adapted to cast off the yarn in the `event of increased tension thereon, Lvielding means forholding said hook in elevated position, a spring-actuating device pivotally mounted, a lever operatively connecting said hook and said device, a rod carried by said device and adapted to actuate means for releasing said arresting' means.

9. l In a stop-motion, a guide-plate, a movable comb pivotally secured to said plate, a releasing-lever pivoted on said plate, a spring for actuating said lever, and a dog mounted in said plate normally engageable with said lever and disengageable therefrom by the movement of said comb.

lO. In a stop-motion, a drop-rod adapted to release the motion-arresting means, a pair of movable levers normally supporting said drop-rod, a wedge adapted to separate said levers and thereby release said rod, and means normally engaging with thc yarn and operative in the event of a break therein for Yforcing said wedge between said levers.

11. In a stop-motion, releasing' means including a pivotally-mounted yarn-supporting hook adapted by its movement to cast off the yarn in the event of increased tension thereon, a pivoted plate, a shoulder in said hook,

a lever engaging with said shoulder and with said plate, and adjustable resilient means operative on said lever whereby the resistance of said hook to such tension may be varied.

l2. In a stop-motion, releasing means including a pivotally-mounted yarn-'supporting hook adapted to cast off the yarn in the event of increased tension thereon, a pivoted plate, a lever operatively connecting said hook and said plate, and means adjustable on said plate providing a shoulder engageable with said lever.

13. In a stop-motion, releasing means including a pivotally-mounted, yarn-supporting hook adapted to cast off the yarn in the event of increased tension thereon, a pivoted plate, a lever operatively connecting said hook and said plate, and separate means connecting said plate and said hook whereby the movement of said plate to reset the same in operative position acts to resetsaid hook in varnsupporting position.

14. In a stop-motion, releasing means comprising a pivoted plate, a pivotally-mounted, slotted yarn-engaging hook adapted to cast off the yarn in the event of increased tension thereon, a lever operatively connecting said hook' and said plate, and a rod secured to said plate and passing' through said slot for simultaneously resetting said hook and said plate in their operative positions.

GEORGE W. RUTH.

Witnesses:

D. E. SMALL, JULIUs P. SHUTZ. 

